| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.84 |
| Score | 0% | 77% |
What is 6a8 + 2a8?
| 8a16 | |
| 4a16 | |
| 12a16 | |
| 8a8 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
6a8 + 2a8 = 8a8
What is 7a + 5a?
| 12a2 | |
| 12 | |
| 2 | |
| 12a |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
7a + 5a = 12a
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
vertical, supplementary |
|
supplementary, vertical |
|
obtuse, acute |
|
acute, obtuse |
Angles around a line add up to 180°. Angles around a point add up to 360°. When two lines intersect, adjacent angles are supplementary (they add up to 180°) and angles across from either other are vertical (they're equal).
Which of the following expressions contains exactly two terms?
quadratic |
|
binomial |
|
polynomial |
|
monomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
If a = 1, b = 5, c = 2, and d = 2, what is the perimeter of this quadrilateral?
| 19 | |
| 24 | |
| 10 | |
| 20 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 1 + 5 + 2 + 2
p = 10